Medium severity · published Oct 5, 2026
CVE-2026-105678
Ghost: Editors Could Promote Staff Users to Their Own Role
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
Ghost is a Node.js content management system. From 0.5.0 until 6.64.0, staff users with the Editor or Super Editor role were able to assign their own role to Author and Contributor users, despite not having permission to assign that role. This issue is fixed in version 6.64.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghost · TryGhost
>= 0.5.0, < 6.64.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105678
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105678
x_refsource_CONFIRM
https://github.com/TryGhost/Ghost/security/advisories/GHSA-4pvx-fwjj-8gpc
x_refsource_MISC
https://github.com/TryGhost/Ghost/issues/30764
x_refsource_MISC
https://github.com/TryGhost/Ghost/commit/99c5642b9bb481df4811a004a6f19d6143ed9aaf
x_refsource_MISC
https://github.com/TryGhost/Ghost/releases/tag/v6.64.0
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